Evacuation system with universal lid for rigid containers

Details Evacuation system with universal lid for rigid containers Evacuation system with universal lid for rigid containers

1994-02-22

1994-11-15

Bertsch, Richard A.

Pumps

Expansible chamber type

Selectively usable plural inlet or outlet distributors for...

417553, 215260, 215270, 215311, 220209, 53510, 53 88, F04B 3912, B65B 3100, B65D 5116

Patent

active

053642414

ABSTRACT:
An evacuation system for unlidded rigid containers including a reciprocating piston pump and a universal disc that provides a leak proof lid for ordinary pots, pans or bowls. The disc is flat and accommodates a variety of container sizes as well as minor surface irregularities in the container lip. Vent holes spaced around the perimeter of the disc prevent implosion of the disc into the container if the disc edge is placed too close to the edge of the container. The disc is somewhat flexible and has a sealing surface on one side for proper seating and sealing on the container lip.

REFERENCES:
patent: 194617 (1877-08-01), Purdy
patent: 561783 (1896-06-01), Fuerth
patent: 1575464 (1926-03-01), Tamura
patent: 1601705 (1926-09-01), Staunton
patent: 1615772 (1927-01-01), Poole
patent: 1773311 (1930-08-01), Killen
patent: 4287819 (1981-09-01), Emerit
patent: 4583925 (1986-04-01), Hawkins
patent: 4763803 (1988-08-01), Schneider
patent: 4975028 (1990-12-01), Schultz
patent: 5299917 (1994-04-01), Schultz

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